net: ipv4: tcp_probe: Replace timespec with timespec64

TCP probe log timestamps use struct timespec which is
not y2038 safe. Even though timespec might be good enough here
as it is used to represent delta time, the plan is to get rid
of all uses of timespec in the kernel.
Replace with struct timespec64 which is y2038 safe.

Prints still use unsigned long format and type.

Signed-off-by: Deepa Dinamani <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Alexey Kuznetsov <[email protected]>
Cc: James Morris <[email protected]>
Cc: Hideaki YOSHIFUJI <[email protected]>
Cc: Patrick McHardy <[email protected]>
Acked-by: YOSHIFUJI Hideaki <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

net/ipv4/tcp_probe.c

@@ -187,13 +187,13 @@ static int tcpprobe_sprint(char *tbuf, int n)
 {
 	const struct tcp_log *p
 		= tcp_probe.log + tcp_probe.tail;
-	struct timespec tv
-		= ktime_to_timespec(ktime_sub(p->tstamp, tcp_probe.start));
+	struct timespec64 ts
+		= ktime_to_timespec64(ktime_sub(p->tstamp, tcp_probe.start));
 
 	return scnprintf(tbuf, n,
 			"%lu.%09lu %pISpc %pISpc %d %#x %#x %u %u %u %u %u\n",
-			(unsigned long)tv.tv_sec,
-			(unsigned long)tv.tv_nsec,
+			(unsigned long)ts.tv_sec,
+			(unsigned long)ts.tv_nsec,
 			&p->src, &p->dst, p->length, p->snd_nxt, p->snd_una,
 			p->snd_cwnd, p->ssthresh, p->snd_wnd, p->srtt, p->rcv_wnd);
 }